CN107884355A - A kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology - Google Patents
A kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology Download PDFInfo
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- CN107884355A CN107884355A CN201711324697.8A CN201711324697A CN107884355A CN 107884355 A CN107884355 A CN 107884355A CN 201711324697 A CN201711324697 A CN 201711324697A CN 107884355 A CN107884355 A CN 107884355A
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- water quality
- detection case
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- monitoring system
- ultraviolet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 8
- 239000003651 drinking water Substances 0.000 claims description 8
- 235000020188 drinking water Nutrition 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000005341 toughened glass Substances 0.000 claims description 3
- 229910052724 xenon Inorganic materials 0.000 claims description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 9
- 230000003595 spectral effect Effects 0.000 abstract description 4
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- 238000005286 illumination Methods 0.000 abstract 1
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- 238000001228 spectrum Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
Abstract
The invention discloses a kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology,Including detection case,Luminous platform and control system,Detection case top is connected with sampling bucket,Water is drained into inside detection case by sampling cylinder by several connecting tubes,The connecting tube mouth of pipe is uniformly arranged on sampling bucket inwall,Connecting tube bottom connects connection with communicating pipe,Detection case inner side is provided with mounting seat,Mounting seat side is connected with hydraulic stem,Luminous platform is linked together by fixed seat and hydraulic stem,Linked together between fixed seat and Luminous platform by rotary shaft,Luminous platform bottom is connected with Transparent lamp shade,Transparent lamp shade surface is provided with several lamp sockets,Ultraviolet lamp is installed inside lamp socket,Control system includes signal gathering unit,Analytic unit and processing unit,Water quality is detected by grab sample,Different spectral illuminations is carried out by the adjustment in light source position and direction,Ensure the accuracy of testing result,Be advantageous to accurately understand water quality situation.
Description
Technical field
The present invention relates to water quality inspection technique field, specially a kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology.
Background technology
Water is Source of life, and the mankind be unable to do without water in life and production activity, the quality of Drinking Water water quality with
Human health is closely related.With the raising of socio-economic development, scientific progress and living standards of the people, people drink to life
The water quality requirement of water improves constantly, and water quality standard for drinking water also correspondingly continues to develop and perfect, due to Drinking Water water quality
The formulation of standard and the habits and customs of people, culture, economic condition, scientific technological advance level, water resource and its water quality situation
Relevant Deng many factors, not only between various countries, and between same national different regions, the requirement to drinking water quality is all deposited
In difference.
Water quality detection is species, the concentration and variation tendency of each pollutant of pollutant in monitoring and measure water body, is commented
The process of valency water quality condition.Monitoring range is quite varied, including is not contaminated and contaminated natural water（River, river, lake, sea
And underground water）And various industrial water drainages etc..Main monitoring project can be divided into two major classes：One kind is reflection water quality condition
Overall target, such as temperature, colourity, turbidity, pH value, electrical conductivity, suspension, dissolved oxygen, COD and biochemical oxygen demand (BOD)；
Another kind of is some noxious materials, such as phenol, cyanogen, arsenic, lead, chromium, cadmium, mercury and organic agricultural chemicals.
Application No. 201520834931.1, patent name are a kind of reality of the ultraviolet water quality monitoring system of throw-in type spectroscopic methodology
With new patent, including main control module, host computer, wireless transport module and photoisolator, the utility model method therefor
It is a kind of optical measuring method of pure physics, simple to operate, without chemical reagent, non-secondary pollution, the testing time is short, can answer extensively
For water quality real-time online in situ detection.
During water quality detection, traditional spectral detection is detected using the spectrum of fixed form, is detected
Effect is undesirable, and is easy to cause water quality detection deviation occur because impurities in water content is uneven, is unfavorable for accurate
Detection.
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology
System, is accurately detected by grab sample to water quality, while carries out different spectrum by the adjustment in light source position and direction
Irradiation, ensures the accuracy of testing result, is advantageous to accurately understand water quality situation, and detection can effectively solve the problem that background technology proposes
The problem of.
The technical solution adopted for the present invention to solve the technical problems is：A kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology
System, including detection case, Luminous platform and control system, the detection case top are connected with sampling bucket, and the sampling cylinder passes through some
Water is drained into inside detection case by individual connecting tube, and the connecting tube mouth of pipe is uniformly arranged on sampling bucket inwall, the connecting tube
Bottom connects connection with communicating pipe, and the detection case inner side is provided with mounting seat, and the mounting seat side is connected with liquid
Depression bar, the Luminous platform are linked together by fixed seat and hydraulic stem, pass through rotary shaft between the fixed seat and Luminous platform
Link together；
The Luminous platform bottom is connected with Transparent lamp shade, and the Transparent lamp shade surface is provided with several lamp sockets, in the lamp socket
Portion is provided with ultraviolet lamp；
The control system includes signal gathering unit, analytic unit and processing unit, and the signal gathering unit is included sequentially
Photoelectric sensor, signal adapter, signal amplifier and the wave filter of electric connection, the analytic unit include the micro- places of STM32
Manage device and power supply, the processing unit includes signal projector and display screen, and the display screen, signal projector be equal and STM32
Microprocessor output control terminal is electrically connected with.
As a kind of preferable technical scheme of the present invention, the connecting tube is controlled by magnetic valve, the magnetic valve
It is controlled by being electrically connected with STM32 output end of microprocessor.
As a kind of preferable technical scheme of the present invention, the rotary shaft is driven by electric rotating machine, the electric rotating machine
Inside fixed seat, electric rotating machine and the STM32 microprocessor is electrically connected with.
As a kind of preferable technical scheme of the present invention, the ultraviolet lamp using xenon lamp as light source, it is and described transparent
Lampshade uses tempered glass materials.
As a kind of preferable technical scheme of the present invention, signal is changed it by the signal projector by digital analog converter
After launch, the display screen uses LCDs.
As a kind of preferable technical scheme of the present invention, the detection case is internally provided with suction pump, and the suction pump leads to
Cross drinking-water pipe the water of outside is pumped into inside detection case, the detection case bottom is connected with drainpipe.
It is defeated by drive circuit and STM32 microprocessors as a kind of preferable technical scheme of the present invention, the suction pump
Go out end to be electrically connected with.
As a kind of preferable technical scheme of the present invention, the detection case is internally provided with supersonic generator, described super
Sonic generator carries out energy conversion by transducer, and the transducer is controlled by STM32 microprocessors.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）The present invention is opened at random using multiple connecting tubes inside struggling against are sampled by moisture to be detected into uniform several pieces
Water inside connecting tube is drained into inside detection case by one magnetic valve to be detected, and ensures the accuracy of testing result；
（2）The present invention realizes position and the angle change of Luminous platform using the combination of hydraulic stem and rotary shaft, passes through difference
Angle and position irradiation, comprehensive ultraviolet spectrogram is carried out to the water inside detection case and irradiated, by different ultraviolet
Linear light spectral synthesis so that water quality detection result is more accurate, greatly reduces because error caused by water is uneven.
Brief description of the drawings
Fig. 1 is the detection case internal structure schematic diagram of the present invention；
Fig. 2 is the control system architecture schematic diagram of the present invention；
Fig. 3 is the Transparent lamp shade structural representation of the present invention.
In figure：1- detection cases；2- Luminous platforms；3- control systems；4- suction pumps；5- drinking-water pipes；6- drainpipes；7- transducings
Device；8- supersonic generators；
101- sampling buckets；102- connecting tubes；103- magnetic valves；104- electric rotating machines；105- fixed seats；106- mounting seats；107-
Hydraulic stem；108- rotary shafts；
201- Transparent lamp shades；202- lamp sockets；203- ultraviolet lamps；
301- signal gathering units；302- analytic units；303- processing units；304- photoelectric sensors；305- signal adapters；
306- signal amplifiers；307- wave filters；308-STM32 microprocessors；309- power supplys；310- signal projectors；311- is shown
Screen.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, " on ", " in ", " under ", "front", "rear", "left", "right", " interior ", "
Outside ", " side " etc., only it is direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, and it is not used to the limitation present invention.
Embodiment：
As shown in Figure 1 to Figure 3, the invention provides a kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology, including detection case 1,
Luminous platform 2 and control system 3, the top of detection case 1 are connected with sampling bucket 101, and the sampling cylinder 101 is connected by several
Water is drained into inside detection case 1 by pipe 102, and the mouth of pipe of connecting tube 102 is uniformly arranged on sampling 101 inwalls of bucket, the company
The bottom of adapter 102 connects connection with communicating pipe 104, is automatically separated into the water sampled inside bucket 101 uniformly by connecting tube 102
Several pieces, be convenient for random water quality detection.
The inner side of detection case 1 is provided with mounting seat 106, and the side of mounting seat 106 is connected with hydraulic stem 107,
The Luminous platform 2 is linked together by fixed seat 105 and hydraulic stem 107, is passed through between the fixed seat 105 and Luminous platform 2
Rotary shaft 108 links together, and the bottom of Luminous platform 2 is connected with Transparent lamp shade 201, the surface of Transparent lamp shade 201 installation
There are several lamp sockets 202, ultraviolet lamp 203 is installed inside the lamp socket 202, pass through the flexible luminous of hydraulic stem 107
The position of platform 2 changes, while the turning effort of rotary shaft 103 causes the irradiating angle of multiple light beams of Luminous platform 2 to occur
Change, multiple spectrum are produced with different irradiating angle irradiation water, so that by the ultraviolet of different positions and angle to inspection
Water inside measuring tank 1 carries out water quality detection, and comprehensive detection result is so as to realizing complete detection.
And when water inlet by communicating pipe 104, pass through the principle communicating pipe of contraction Luminous platform 2 of hydraulic stem 107
104, avoid water from being dropped in the surface of Luminous platform 2, until water inlet, which can stretch hydraulic stem 107 after completing, realizes Luminous platform 2
Position adjustments.
As shown in Fig. 2 the control system 3 includes signal gathering unit 301, analytic unit 302 and processing unit 303,
The signal gathering unit 301 includes photoelectric sensor 304, signal adapter 305, the signal amplifier being sequentially electrically connected with
306 and wave filter 307, the analytic unit 302 include STM32 microprocessors 308 and power supply 309, the processing unit 303 wraps
Signal projector 310 and display screen 311 are included, the display screen 311, signal projector 310 are and STM32 microprocessors 308 are defeated
Go out control terminal electric connection, optical signal caused by ultraviolet lamp 203 is received by photoelectric sensor 304, by signal adapter
Current signal is converted to voltage signal by 305, carries out signal amplification by signal amplifier 306 and wave filter 307 is filtered
Processing, the voltage signal stablized simultaneously are transferred to STM32 microprocessors 308 and analyzed and processed, and pass through STM32 microprocessors
After 308 are analyzed and processed, test result is remotely sent by signal projector 310, while display screen 311 is direct
Show testing result.
Preferably, the connecting tube 102 is controlled by magnetic valve 103, the magnetic valve 103 by and STM32
The output end of microprocessor 308 is electrically connected with and is controlled, and magnetic valve 103 is opened at random by STM32 microprocessors 308, is realized
The water quality detection of grab sample.
The rotary shaft 103 is driven by electric rotating machine 104, and the electric rotating machine 104 is arranged on inside fixed seat 105,
The electric rotating machine 104 and STM32 microprocessors 308 are electrically connected with, and electric rotating machine is controlled by STM32 microprocessors 308
104, constantly rotate after a test, receive the ultraviolet spectrogram of different angle, detection is more comprehensive.
The ultraviolet lamp 203 uses xenon lamp as light source, and the Transparent lamp shade 201 uses tempered glass materials, resistance to
Corrosion and explosion-proof capabilities are strong.
The signal projector 310 will be launched by digital analog converter after signal conversion, and the display screen 311 uses liquid
Crystal display screen.
The detection case 1 is internally provided with suction pump 4, and the water of outside is pumped into inspection by the suction pump 4 by drinking-water pipe 5
Inside measuring tank 1, the bottom of detection case 1 is connected with drainpipe 6, after a test by suction pump 4 by clean water be pumped into pair
Being cleaned inside detection case 1, the suction pump 4 is electrically connected with by drive circuit and the output end of STM32 microprocessors 308,
Realized and automatically controlled by STM32 microprocessors 308.
The detection case 1 is internally provided with supersonic generator 8, and the supersonic generator 8 carries out energy by transducer 7
Amount conversion, the transducer 7 are controlled by STM32 microprocessors 308, while cleaning, pass through STM32 microprocessors
308 driving transducers 7 convert electrical energy into mechanical energy, drive ultrasonic transmitter 8 to produce ultrasonic wave afterwards, pass through ultrasonic wave
Concussion effect ensures that next water quality detection is interference-free to being cleaned inside detection case 1.
In summary, the main characteristic of the invention lies in that：
（1）The present invention is opened at random using multiple connecting tubes inside struggling against are sampled by moisture to be detected into uniform several pieces
Water inside connecting tube is drained into inside detection case by one magnetic valve to be detected, and ensures the accuracy of testing result；
（2）The present invention realizes position and the angle change of Luminous platform using the combination of hydraulic stem and rotary shaft, passes through difference
Angle and position irradiation, comprehensive ultraviolet spectrogram is carried out to the water inside detection case and irradiated, by different ultraviolet
Linear light spectral synthesis so that water quality detection result is more accurate, greatly reduces because error caused by water is uneven.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (8)
- A kind of 1. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology, it is characterised in that：Including detection case（1）, Luminous platform（2）And control System processed（3）, the detection case（1）Top is connected with sampling bucket（101）, the sampling cylinder（101）Pass through several connecting tubes （102）Water is drained into detection case（1）Inside, the connecting tube（102）The mouth of pipe is uniformly arranged on sampling bucket（101）On inwall, The connecting tube（102）Bottom and communicating pipe（104）Connection connection, the detection case（1）Inner side is provided with mounting seat （106）, the mounting seat（106）Side is connected with hydraulic stem（107）, the Luminous platform（2）Pass through fixed seat（105）And hydraulic pressure Bar（107）Link together, the fixed seat（105）And Luminous platform（2）Between pass through rotary shaft（108）Link together；The Luminous platform（2）Bottom is connected with Transparent lamp shade（201）, the Transparent lamp shade（201）Surface is provided with several lamps Seat（202）, the lamp socket（202）Inside is provided with ultraviolet lamp（203）；The control system（3）Including signal gathering unit（301）, analytic unit（302）And processing unit（303）, the letter Number collecting unit（301）Including the photoelectric sensor being sequentially electrically connected with（304）, signal adapter（305）, signal amplifier （306）And wave filter（307）, the analytic unit（302）Including STM32 microprocessors（308）And power supply（309）, the place Manage unit（303）Including signal projector（310）And display screen（311）, the display screen（311）, signal projector（310） With STM32 microprocessors（308）Output control terminal is electrically connected with.
- A kind of 2. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology according to claim 1, it is characterised in that：The connection Pipe（102）Pass through magnetic valve（103）It is controlled, the magnetic valve（103）By with STM32 microprocessors（308）Output end Electric connection is controlled.
- A kind of 3. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology according to claim 1, it is characterised in that：The rotation Axle（103）Pass through electric rotating machine（104）Driving, the electric rotating machine（104）Installed in fixed seat（105）Inside, the rotation Motor（104）With STM32 microprocessors（308）It is electrically connected with.
- A kind of 4. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology according to claim 1, it is characterised in that：It is described ultraviolet Line lamp（203）Using xenon lamp as light source, and the Transparent lamp shade（201）Using tempered glass materials.
- A kind of 5. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology according to claim 1, it is characterised in that：The signal Transmitter（310）It will be launched by digital analog converter after signal conversion, the display screen（311）Using LCDs.
- A kind of 6. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology according to claim 1, it is characterised in that：The detection Case（1）It is internally provided with suction pump（4）, the suction pump（4）Pass through drinking-water pipe（5）The water of outside is pumped into detection case（1） Inside, the detection case（1）Bottom is connected with drainpipe（6）.
- A kind of 7. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology according to claim 6, it is characterised in that：It is described to draw water Pump（4）Pass through drive circuit and STM32 microprocessors（308）Output end is electrically connected with.
- A kind of 8. ultraviolet water quality monitoring system of throw-in type spectroscopic methodology according to claim 1, it is characterised in that：The detection Case（1）It is internally provided with supersonic generator（8）, the supersonic generator（8）Pass through transducer（7）Carry out energy conversion, The transducer（7）Pass through STM32 microprocessors（308）It is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324697.8A CN107884355A (en) | 2017-12-13 | 2017-12-13 | A kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324697.8A CN107884355A (en) | 2017-12-13 | 2017-12-13 | A kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology |
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| Publication Number | Publication Date |
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| CN107884355A true CN107884355A (en) | 2018-04-06 |
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ID=61774128
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| CN201711324697.8A Withdrawn CN107884355A (en) | 2017-12-13 | 2017-12-13 | A kind of ultraviolet water quality monitoring system of throw-in type spectroscopic methodology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110766916A (en) * | 2019-09-29 | 2020-02-07 | 南京欧泰物联网科技有限公司 | Distributed unit building water quality detection system and measurement method |
| CN111272965A (en) * | 2020-03-10 | 2020-06-12 | 广东通达检测技术有限公司 | Remote multi-parameter water quality detection equipment and water quality detection method |
| CN112161939A (en) * | 2020-10-19 | 2021-01-01 | 黑龙江峰向标科技有限公司 | Full-automatic water quality analysis system based on spectrum method |
| CN112630397A (en) * | 2020-12-14 | 2021-04-09 | 中国兵器工业第五九研究所 | Rainwater monitoring device |
-
2017
- 2017-12-13 CN CN201711324697.8A patent/CN107884355A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110766916A (en) * | 2019-09-29 | 2020-02-07 | 南京欧泰物联网科技有限公司 | Distributed unit building water quality detection system and measurement method |
| CN111272965A (en) * | 2020-03-10 | 2020-06-12 | 广东通达检测技术有限公司 | Remote multi-parameter water quality detection equipment and water quality detection method |
| CN111272965B (en) * | 2020-03-10 | 2022-05-10 | 广东通达检测技术有限公司 | Remote multi-parameter water quality detection equipment and water quality detection method |
| CN112161939A (en) * | 2020-10-19 | 2021-01-01 | 黑龙江峰向标科技有限公司 | Full-automatic water quality analysis system based on spectrum method |
| CN112630397A (en) * | 2020-12-14 | 2021-04-09 | 中国兵器工业第五九研究所 | Rainwater monitoring device |
| CN112630397B (en) * | 2020-12-14 | 2022-10-25 | 中国兵器工业第五九研究所 | Rainwater monitoring device |
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Application publication date: 20180406 |